Material: ABS Model: LZ-3101 Supported Formats: Bluetooth-compatible Connection, TF Card, USB Port Type: USB Frequency Response Range: 200HZ-20KHz Power Supply: Built-in 500mAh Rechargeable Battery(Included) Features: 360 Degree Stereo, Clear Sound, Portable Size Details: 16cm x 12.5cm x 10.3cm/6.3" x 4.92" x 4.06" (Approx.)